Equivalence classes

#	Equivalence class	Test input example	Expected result
1	1-3, characters, uppercase letter, special character	Ab!	Error: Password is too short
2	4-16 characters, special character	p@ssword123	Error: missing uppercase letter
3	4-16 characters, uppercase letter	Password123	Error: missing special character
4	4-16 characters, uppercase letter, special character	Str0ngP@ss!	Accepted
5	17+ characters, uppercase letter, special character	SuperStrongP@ssword123!	Error: Password is too long

Boundary values

#	Boundary value	Test input example	Expected result
1	3 characters	Ab!	Error: Password is too short
2	4 characters	Ab1!	Accepted
3	5 characters	Abc1!	Accepted
4	15 characters	SecureP@ssword1!	Accepted
5	16 characters	StrongP@ssw0rd1!	Accepted
6	17 characters	ExtraLongP@ssw0rd1!	Error: Password is too long